Angular
Angular is an open-sourced JavaScript framework for web and mobile development. It is build upon TypeScript and supervised by Google Angular Team and the Angular developer community.
Angular launched in September 2016, (otherwise called Angular 2.0) is a complete rewrite of AngularJS (Angular 1.0), which was introduced in 2010.
Angular vs Vue vs React, front end development is overwhelm by 3 technologies – Angular, React, and Vue. A few years ago, developers had few alternatives for frameworks to develop a website. But, as technology is developing each day, new JavaScript frameworks are being introduced with more developed features.
Angular Components Overview
Components are the primary building block for Angular applications. Every component comprises of:
- An HTML template that announces what renders on the page
- A Typescript class that characterizes the behaviour
- A CSS selector that characterizes how the component is use in a template
- Additionally, CSS styles applied to the template
Why Angular?
Why do we use Angular which uses TypeScript as an essential programming language when it goes along with transpilation overload? Ultimately, the appropriate answer lies in the list of benefits that TypeScript offers over traditional JavaScript. With TypeScript, angular programmers can use data types, syntax features, code completion and all the wide range of modern features that help them code quicker and more productive. Since TypeScript is an object-oriented programming language, developers can use the benefits of classes, articles, inheritance, and similar features that remaining OOPLs offer.
Angular, thus is the framework that use TypeScript as the essential programming language. Since the Angular team decided to use semantic versioning, Angular 2, 4, 5, 6 and 7 are all versions of a similar framework, each version being greater than the previous one, whereas AngularJS is an amazing framework that uses JavaScript as its core programming language.
Some of the Best Practices
Next, we will go through some of the best practices that a developer should follow to keep the project simpler to manage and fix.
- Utilizing the Power of TypeScript
Angular is compose using TypeScript which implies that all the code that you will write to build your stunning web-application will also be written utilizing TypeScript. One central issue to note here is that all the JavaScript code is large TypeScript code. Although the suggestion is that you use TypeScript code from the beginning, you can even use JavaScript code, if you want.
Using TypeScript offers you certain advantages as you are able to define types on the properties and variables, you can characterize classes and interfaces and use the power of interfaces and unions.
- Use the Angular CLI
Angular CLI is quite the most remarkable accessibility tools available when creating applications with Angular. The Angular CLI makes it simple to make an application that already works, right out of the box. It as of now follows the very accepted procedures!
The Angular CLI is a command-line interface tool that is use to introduce, develop, frame, maintain and even test and investigate Angular applications. You can use the tool in a command shell.
Rather than making the files and folders manually, attempt to use the Angular CLI to generate new components, directives, modules, services, pipes or even classes.
- Lazy Loading Modules
Lazy loading is a strategy in Angular that allows you to load JavaScript components. It is a feature that could help dedicated angular programmers a lot with huge and heavy applications.
Since lazy loading separates the application into various modules (logical pieces of code) and load those modules just when they are in need by the user (depending upon where the user navigates within the application), it diminishes the initial load time of the application since less KBs are loaded when the application is load first. As the user explores within the application, more chunks are loaded as and when required. Angular router has complete assistance for lazy loading Angular modules.
- Using Async Pipe
You probably heard that the AsyncPipe unsubscribes from Observables when the component gets destroyed. In any case, did you likewise know it unsubscribes when the reference of the declaration changes?
That’s right, when we assign another Observable to the property that we utilize the AsyncPipe on, the AsyncPipe will consequently unsubscribe from the previous bound Observable. In addition to the fact that this makes our code quite perfect, but at the same time, it’s protecting us from extremely subtle memory leaks.
Methods to Resolve the Key Performance Woes in Angular Applications
- If an application experiences frequent slowdown, the users become annoyed and leave the application and chooses another app with similar functionality. To determine this issue, improve your hosting by utilizing PWA or static cache content.
- Unexpected application crashes are likely when many requests are made to the server around a similar time. To forestall this, one can hinder the HTTP response or use a quality service aggregator.
- Needless server use compromises an application’s security as well as influences its performance. Thus, it is imperative to get rid of unnecessary change detection.
- Compatibility issues may emerge when the applications don’t match the rules and regulations of the migrated technology. This influences the application functioning and hampers the user experience. For this case, attempt to dispose of the undesirable numerical recomputation by eliminating them from the application.
- Heavily loaded data streams may cause sudden pop-ups in the Angular applications. For such issues, decreasing the size of the bootstrap logic is advisable.
Key Takeaways
Hire dedicated web developers that follow these best practices and techniques to determine the key performance to woe in angular applications. These should be executed appropriately during development just as post-deployment to advance the performance of Angular applications.
Author:
Atman Rathod is the Co-founder at CMARIX TechnoLabs Pvt. Ltd., a leading Website and Mobile App development(android app & iphone app development) company with 13+ years of experience. He loves to write about technology, startups, entrepreneurship, and business. His creative abilities, academic track record and leadership skills made him one of the key industry influencers as well.
